spaeks



(No Model.) I 2 Sheets-Sheet l.

W. E. SPARKS;

' DOOR OHEGK. No. 255,893. Patented Apr. 4,1882.

Mag

(No Model.) 2 Sheets-+Sheet 2.

W. E. SPARKS.

DOOR CHECK.

N0. 255,893 Pafented Apr4,1832.

W 5 I WWW/ a V m n UNITED STATES PAT NT @FFICEQ" WILLIAM E. SPARKS, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO P. 85 F.

CORBIN, OF SAME PLACE.

DOOR-CHECK.

SPECIFICATION forming part of Letters Patent No. 255,893, dated April 4, 1882.

Application filed February 15, 1882. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM E. SPARKS, of New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Chain Fasteners for Doors, of which the following is a specification.

My invention relates to chain fasteners for doors in which a base having a notch in its edge at one side is provided with a pivoted disk or button having link-receiving recesses which, when the button is in a certain position, coincide with the notch in the base. so that a ring or chain-link may be inserted in the link-receiving recesses when saidrecesses are opposite said notch and retained therein by partially rotating the disk; and the objects of my invention are to provide a secure, cheap, and convenient chain fastening for doors. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a front elevation. Figs. 2 and 3 are side elevations. Fig. 4 is a horizontal section on line w m of Fig. 3. Fig. 5 is a perspective view of the base-plate; and Fig. 6, a perspective view of the button, showing its rear side.

A designates a plate to which a staple and chain, B, is permanently secured in any ordinary manner.

0 designates a base-plate, and D a button pivoted thereto, and to which plate and button the opposite end of the chain may be attached and detached in the manner hereinaf ter described, the same being designed for use by securing one plate upon a door-casing and the other upon a door in such manner as to while the portion of its face which is covered by the button D is substantially flat. This notch is made of a sufficient width to receive the end link, b. upon the free end of the chain. The button D is substantially in disk form, but is somewhat hollowed out upon its back, as shown in Figs. 4 and 6, and it is pivoted to the plate C, so that it may rotate thereon. In order to prevent it from turning too freely, I place a frictioirspring, 0, Figs. 3 and 4, around its pivot.

Upon one side of the button there is a rib, d, which serves as an operating-handle and also as a stud or hook to take into the end link, 5. By the sides of this rib at the-edge of the button there are two link-receiving recesses, e 6, Figs. 3 and 6, to admit of the end link, b, being slipped over and upon the rib d. When the recesses e c of the button D are brought to coincide with .the notch a in the base-plate by turning the button on its pivot the end link may be passed endwise into the notch a and back of the rib d. It may then be brought over and upon said rib and entirely forward of the base-plate. By then turning the button the rib and end link are carried over the solid portion of the base-plate--that is, away from in front of the notch aso that the chain is securely held thereto, as shown in Figs. 1 and 2, and cannot be detached therefrom except by turning the button to bring the rib and recesses in front of the notch a. 'lhis notch is made upon one side, so that the weight of the chain will have a tendency to prevent the button from accidentally working into the proper position for unfastening the chain..

I claim as my invention-- In a chain fastener, the combination of the base having the notch 00 at one edge and the rotating button pivoted thereto having the link-receiving recesses and holding-rib, substantially as described, and for the purpose specified.

WILLIAM E. SPARKS. Witnesses:

CHARLES PEOK, H. A. BAILEY. 

